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Process for conversion of waste fluid streams from chemical processing plants to beneficiary agriculture products

Active Publication Date: 2011-03-01
TESSENDERLO KERLEY INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0030]The present invention is directed to the preparation of a useful agriculture product, more specifically ammoni

Problems solved by technology

The said ammonium sulfate solution may be contaminated with hydrocarbons from either the sour water stripper gas or the spent alkylation acid and requires further purification.

Method used

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  • Process for conversion of waste fluid streams from chemical processing plants to beneficiary agriculture products
  • Process for conversion of waste fluid streams from chemical processing plants to beneficiary agriculture products
  • Process for conversion of waste fluid streams from chemical processing plants to beneficiary agriculture products

Examples

Experimental program
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Effect test

example 1

Treatment of Ammonium Sulfide with Virgin Sulfuric Acid

[0076]A 2 liter five neck round bottom flask equipped with mechanical agitator, condenser, thermometer, and two addition funnels for sulfuric acid and ammonium sulfide solution (ASD) was used. 100 grams of 40% commercial ammonium sulfate (AST) was added to the 2 liter flask as a starter solution heel. The top of the condenser exited directly to a caustic scrubber containing 962 grams of 20% caustic soda. The sulfuric acid addition funnel contained 596 grams of the 65% acid. The ammonium sulfide addition flask contained 520 ml of 45% ammonium sulfide solution. The mole ratio of virgin acid to ASD was 1.15 to 1.0. 180 grams of water was added to adjust the product AST concentration to 40%. ASD and virgin acid were dropped into the agitated ammonium sulfate solution. Temperature rose from 25° C. at the beginning of reaction to about 50° C. at the end of reaction. The crude ammonium sulfate product weight was 864.6 grams of colorles...

example 2

Treatment of Ammonium Sulfide with Spent Alkylation Acid and a Heel or Initial Charge of AST

[0079]A 2 liter five neck round bottom flask equipped with mechanical agitator, condenser, thermometer, and two addition funnels for spent sulfuric acid and ammonium sulfide solution (ASD) was used. 100 grams of 40% ammonium sulfate (AST) solution was introduced to the flask prior to the introduction of the acid or ASD. The condenser exit was directed to a caustic scrubber containing 550 grams of 20% caustic soda. The spent sulfuric acid addition funnel contained 452 ml of 65% spent acid. The ammonium sulfide addition flask contained 472 ml of 49.6% ammonium sulfide solution. The mole ratio of spent acid to ASD was 1.15 to 1.0. 180 grams of water was added to adjust the product AST concentration to 40%. ASD and spent acid were dropped to the agitated ammonium sulfate solution. Temperature rose from 25° C. at the beginning of reaction to about 50° C. at the end of reaction. The crude ammonium ...

example 3

Treatment of Ammonium Sulfide with Sulfuric Acid with Cooling the Ammonium Sulfate Reactor

[0083]The above reactions were repeated without the initial charge of 40% ammonium sulfate (AST) solution, but the ammonium sulfide (ASD) was placed in the reactor along with the required water amount to produce 40% ASD solution. The solution was cooled to about 5-15° C. and sulfuric acid was added at a rate that the exiting hydrogen sulfide gas was completely absorbed into the caustic scrubber with no breakthrough. The reaction / production time was cut from about 3 hrs to about 30 minutes.

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Abstract

The present invention is directed to the conversion of gas streams comprising ammonia, hydrogen sulfide, and water in the form of liquids or gases that are generated by petroleum refineries and coke ovens to beneficiary agriculture products, by forming ammonium sulfide and then converting the ammonium sulfide, using sulfuric acid, to pure ammonium sulfate.

Description

FIELD OF INVENTION[0001]The present invention is directed to the conversion of gas streams comprising ammonia, hydrogen sulfide, and water in the form of liquids or gases that are generated by petroleum refineries and coke ovens to beneficiary agriculture products, particularly ammonium sulfate (AST) solution or dry ammonium sulfate product using spent alkylation sulfuric acid or virgin sulfuric acid.DESCRIPTION OF RELATED ART[0002]Hydrogen sulfide is highly toxic to humans and at concentrations over 1,000,000 μg / m3 (about 1000 ppm) quickly causes death by paralysis of the respiratory system. At lower concentrations, it causes conjunctivitis with reddening and lachrymal secretion, respiratory tract irritation, nerve effects, pulmonary edema, heart muscle damage, locomotion, and unconsciousness.[0003]Atmospheric concentrations of ammonia are usually below the level to be harmful to human, animals and plants. High concentrations of ammonia are detrimental to humans, and animals due to...

Claims

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Application Information

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IPC IPC(8): C01B17/96C01C1/24
CPCC01B17/0408C01B17/05C01C1/24
Inventor HOJJATIE, MICHAEL MASSOUDPUSTILNIK, ANATOLYKOMINSKI, HARRY CHARLES
Owner TESSENDERLO KERLEY INC
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